VJ143D40: VIIRS BRDF/Albedo Quality Daily Global Climate Grid

NOAA-20 VIIRS VJ143D40 provides daily BRDF and albedo quality metrics at 30 arc-second (1,000 meter) resolution for climate modeling. Each product synthesizes 16 days of observations, temporally weighted to the ninth day, and covers the entire globe on a Climate Modeling Grid (CMG). It includes quality flags for moderate resolution bands M1-M5, M7, M8, M10, M11, and the Day/Night Band (DNB), plus local solar noon, valid observation counts, snow status, and uncertainty layers.

Use Cases

• Assessing pixel-level data quality for VIIRS reflectance bands in climate models based on the BRDF/Albedo Quality layer.
• Incorporating temporally weighted surface albedo into global climate simulations using the Climate Modeling Grid (CMG) format.
• Analyzing snow cover dynamics and its impact on surface reflectance using the Snow Status parameter.
• Evaluating retrieval uncertainty for downstream products like vegetation indices based on the Uncertainty layer.
• Studying diurnal surface reflectance patterns using the Local Solar Noon values.

Strengths

• Provides daily global coverage at a consistent 30 arc-second (1,000 meter) resolution.
• Incorporates algorithm improvements from S-NPP VIIRS V002, including better calibration coefficients and geolocation accuracy.
• Data is available on multiple authoritative platforms (NASA Earthdata and Data.gov), indicating reliability and broad access.

Limitations

• Specific column names and data structure details are not provided in the available metadata.
• The dataset size and row count are unknown across all sources.
• The license is listed as 'other-license-specified' without further details.

Provenance

Source

LPCLOUD (NASA Earthdata listing)

Collection Method

Produced daily from NOAA-20 VIIRS sensor data using a 16-day temporal composite algorithm.

Freshness

2026-04-09 20:49:11.413443

Geography

Global coverage on a Climate Modeling Grid (CMG).